umbonulateadj.
Etymology: < modern Latin umbonulātus, < Latin umbōn- umbo n.: see -ule suffix and -ate suffix2.Previous versions of the OED give the stress as: umˈbonulate.
Botany.
1866 J. Lindley & T. Moore II. 1190/1 Umbonulate, terminated by a very small boss or nipple.
This entry has not yet been fully updated (first published 1921; most recently modified version published online March 2022).